We have added a Gift Upgrades feature that allows you to gift an account upgrade to another member, just in time for the holiday season. You can see the gift option when going to the Account Upgrades screen, or on any user profile screen.

Civilization IV: Warlords v2.13 (Mac) 2016-10-05

(March 12, 2008) This is an official update for the Mac version of Civilization IV Warlords. This patch will update any current version of the game to v2.13. This patch is intended to bring the Mac version up to date with the PC version of the game offering a variety of fixes.